[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR236.17]

[Page 545]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 236_RULES, STANDARDS, AND INSTRUCTIONS GOVERNING THE INSTALLATION, 
 
              Subpart A_Rules and Instructions: All Systems
 
Sec. 236.17  Pipe for operating connections, requirements.

    (a) Steel or wrought-iron pipe one inch or larger, or members of 
equal strength, shall be used for operating connections for switches, 
derails, movable-point frogs, facing-point locks, rail-locking devices 
of movable bridge protected by interlocking, and mechanically operated 
signals, except up-and-down rod which may be three-fourths inch pipe or 
solid rod. Pipe shall be fully screwed into coupling and both ends of 
each pipe shall be riveted to pipe plug with 2 rivets.
    (b) Pipeline shall not be out of alignment sufficiently to interfere 
with proper operation, shall be properly compensated for temperature 
changes, and supported on carriers spaced not more than 8 feet apart on 
tangent and curve of less than 2[deg] and not more than 7 feet apart on 
curve of 2[deg] or more. With lever in any position, couplings in pipe 
line shall not foul carriers.

[49 FR 3383, Jan. 26, 1984]

                     Roadway Signals and Cab Signals